Click to enlargeISO250 Series O-Rings

ISO250 Replacement O-Rings
Fits All ISO250 (LF250) Centering Ring
• Replacement Elastomer O-Rings

Available O'Rings (Gaskets)
• Buna-N (Nitrile, NBR): 100°C Max
• Viton (Fluorocarbon, FKM): 200°C Max
• Silicone (Chemical Series): 200°C Max



ISO250 Buna O-Ring <br> (ISO250-1000-OB)
ISO250 Silicone O-Ring <br> (ISO250-1000-OS)
ISO250 Buna O-Ring
(ISO250-1000-OB)

Price: $18.26
Sale: $4.00
ISO250 Silicone O-Ring
(ISO250-1000-OS)

Price: $19.93
Sale: $10.00
ISO250 Viton O-Ring <br> (ISO250-1000-OV)
Click to enlarge
ISO250 Viton O-Ring
(ISO250-1000-OV)

Price: $48.00
Sale: $20.00
Centering Ring Assemblies

ISO250, All Types

Click to enlarge
ISO250 Series Hardware


Viton® (Fluorocarbon, FKM) O-Rings:
200°C Maximum
• Viton® (Fluorocarbon, FKM) is normally used in vacuum service. Viton® has a low porosity to most gases and withstands high temperatures up to 200°C for short periods.

Silicone O-Rings:
200°C Maximum, Chemical Applications
• Silicone is used in chemical applications and can withstand temperatures of 200°C for short periods, but silicone tends to harden to prolonged high temperature service, sticking to the metal surfaces and making the o-ring difficult to be replaced. Silicone is also very porous to helium.

Buna-N O-Rings:
100°C Maximum
• Buna-N is low cost, but their maximum operating temperature of 100°C makes them unacceptable for many high temperature vacuum applications.

Contact LDS Vacuum with any questions:
Phone (407)862-4643 via Fax (407)862-8723 or
info@ldsvacuum.com

LDS Vacuum Products is a 100% woman owned company and
certified Woman Owned Small Business (WOSB)
The logos and/or trademarks appearing on this page are not owned by or registered to LDS but, rather, designate products sold by LDS, and are owned and/or registered to the manufacturers or suppliers of the products.
Viton® is a registered trademark of DuPont Dow Elastomers